The first reason is that don't intend to learn or Lack of learning. When learning English We tend to ignore and don't intend to learn because I think is not necessary. Always remember the vocabulary and grammar is not used to be incorrect and Don't know the real master. In addition , Lack of practice or rarely used in everyday life. With the English is not the native language of the country of Thailand. We rarely use English so the lack of practice in English or maybe not, but learning to use.,why don't we get the English development increases. Finally , Bias towards English or don't like English. since English is not the native language of the country of Thailand and country of Thailand has its own language. Many people love the Thailand so feel prejudice and the like in English including me. It is not intended to,and interest in the English language.